We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Invalid json generated with SecurityGroupIngress
Ref: https://s3-us-west-2.amazonaws.com/cloudformation-templates-us-west-2/EC2InstanceWithSecurityGroupSample.template

Invalid format generated:

``` json
"SecurityGroupIngress": [
                    {
                        "Properties": {
                            "CidrIp": "0.0.0.0/0",
                            "FromPort": "0",
                            "IpProtocol": "-1",
                            "ToPort": "65535"
                        },
                        "Type": "AWS::EC2::SecurityGroupIngress"
                    }
                ]
```

With the above template AWS will complain:

```
Encountered unsupported property Type
```

Correct format:

``` json
"SecurityGroupIngress": [
                    {
                        "CidrIp": "0.0.0.0/0",
                        "FromPort": "0",
                        "IpProtocol": "-1",
                        "ToPort": "65535"
                    }
                ]
```


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `examples/RedshiftClusterInVpc.py`
Content:
```
1 # Converted from Redshift.template located at:
2 # http://aws.amazon.com/cloudformation/aws-cloudformation-templates/
3 
4 from troposphere import Template, Parameter, Ref, Equals
5 from troposphere import If, Output, Join, GetAtt
6 from troposphere.redshift import Cluster, ClusterParameterGroup
7 from troposphere.redshift import AmazonRedshiftParameter, ClusterSubnetGroup
8 from troposphere.ec2 import VPC, Subnet, InternetGateway, VPCGatewayAttachment
9 from troposphere.ec2 import SecurityGroup, SecurityGroupIngress
10 
11 
12 t = Template()
13 
14 t.add_version("2010-09-09")
15 
16 t.add_description(
17     "AWS CloudFormation Sample Template: Redshift cluster in a VPC")
18 
19 dbname = t.add_parameter(Parameter(
20     "DatabaseName",
21     Description="The name of the first database to be created when the "
22     "redshift cluster is created",
23     Type="String",
24     Default="defaultdb",
25     AllowedPattern="([a-z]|[0-9])+",
26 ))
27 
28 clustertype = t.add_parameter(Parameter(
29     "ClusterType",
30     Description="The type of the cluster",
31     Type="String",
32     Default="single-node",
33     AllowedValues=[
34         "single-node",
35         "multi-mode"
36     ],
37 ))
38 
39 numberofnodes = t.add_parameter(Parameter(
40     "NumberOfNodes",
41     Description="The number of compute nodes in the redshift cluster. "
42     "When cluster type is specified as: 1) single-node, the NumberOfNodes "
43     "parameter should be specified as 1, 2) multi-node, the NumberOfNodes "
44     "parameter should be greater than 1",
45     Type="Number",
46     Default="1",
47 ))
48 
49 nodetype = t.add_parameter(Parameter(
50     "NodeType",
51     Description="The node type to be provisioned for the redshift cluster",
52     Type="String",
53     Default="dw2.large",
54 ))
55 
56 masterusername = t.add_parameter(Parameter(
57     "MasterUsername",
58     Description="The user name associated with the master user account for "
59     "the redshift cluster that is being created",
60     Type="String",
61     Default="defaultuser",
62     AllowedPattern="([a-z])([a-z]|[0-9])*",
63     NoEcho=True,
64 ))
65 
66 masteruserpassword = t.add_parameter(Parameter(
67     "MasterUserPassword",
68     Description="The password associated with the master user account for the "
69     "redshift cluster that is being created.",
70     Type="String",
71     NoEcho=True,
72 ))
73 
74 conditions = {
75     "IsMultiNodeCluster": Equals(
76         Ref("ClusterType"),
77         "multi-mode"
78     ),
79 }
80 
81 for k in conditions:
82     t.add_condition(k, conditions[k])
83 
84 redshiftcluster = t.add_resource(Cluster(
85     "RedshiftCluster",
86     ClusterType=Ref("ClusterType"),
87     NumberOfNodes=If("IsMultiNodeCluster",
88                      Ref("NumberOfNodes"), Ref("AWS::NoValue")),
89     NodeType=Ref("NodeType"),
90     DBName=Ref("DatabaseName"),
91     MasterUsername=Ref("MasterUsername"),
92     MasterUserPassword=Ref("MasterUserPassword"),
93     ClusterParameterGroupName=Ref("RedshiftClusterParameterGroup"),
94     VpcSecurityGroupIds=Ref("SecurityGroup"),
95     ClusterSubnetGroupName=Ref("RedshiftClusterSubnetGroup"),
96 ))
97 
98 amazonredshiftparameter1 = AmazonRedshiftParameter(
99     "AmazonRedshiftParameter1",
100     ParameterName="enable_user_activity_logging",
101     ParameterValue="true",
102 )
103 
104 redshiftclusterparametergroup = t.add_resource(ClusterParameterGroup(
105     "RedshiftClusterParameterGroup",
106     Description="Cluster parameter group",
107     ParameterGroupFamily="redshift-1.0",
108     Parameters=[amazonredshiftparameter1],
109 ))
110 
111 redshiftclustersubnetgroup = t.add_resource(ClusterSubnetGroup(
112     "RedshiftClusterSubnetGroup",
113     Description="Cluster subnet group",
114     SubnetIds=Ref("Subnet"),
115 ))
116 
117 vpc = t.add_resource(VPC(
118     "VPC",
119     CidrBlock="10.0.0.0/16",
120 ))
121 
122 subnet = t.add_resource(Subnet(
123     "Subnet",
124     CidrBlock="10.0.0.0/24",
125     VpcId=Ref("VPC"),
126 ))
127 
128 internetgateway = t.add_resource(InternetGateway(
129     "InternetGateway",
130 ))
131 
132 gatewayattachment = t.add_resource(VPCGatewayAttachment(
133     "GatewayAttachment",
134     VpcId=Ref("VPC"),
135     InternetGatewayId=Ref("InternetGateway"),
136 ))
137 
138 securitygroupingress1 = SecurityGroupIngress(
139     "SecurityGroupIngress1",
140     CidrIp="10.0.0.0/16",
141     FromPort="80",
142     ToPort="80",
143     IpProtocol="tcp",
144 )
145 
146 securitygroup = t.add_resource(SecurityGroup(
147     "SecurityGroup",
148     GroupDescription="Security Group",
149     SecurityGroupIngress=[securitygroupingress1],
150     VpcId=Ref("VPC"),
151 ))
152 
153 t.add_output(Output(
154     "ClusterEndpoint",
155     Value=Join(":", [GetAtt(redshiftcluster, "Endpoint.Address"),
156                GetAtt(redshiftcluster, "Endpoint.Port")]),
157 ))
158 
159 print(t.to_json())
160
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/examples/RedshiftClusterInVpc.py b/examples/RedshiftClusterInVpc.py
--- a/examples/RedshiftClusterInVpc.py
+++ b/examples/RedshiftClusterInVpc.py
@@ -6,7 +6,7 @@
 from troposphere.redshift import Cluster, ClusterParameterGroup
 from troposphere.redshift import AmazonRedshiftParameter, ClusterSubnetGroup
 from troposphere.ec2 import VPC, Subnet, InternetGateway, VPCGatewayAttachment
-from troposphere.ec2 import SecurityGroup, SecurityGroupIngress
+from troposphere.ec2 import SecurityGroup, SecurityGroupRule
 
 
 t = Template()
@@ -135,18 +135,18 @@
     InternetGatewayId=Ref("InternetGateway"),
 ))
 
-securitygroupingress1 = SecurityGroupIngress(
-    "SecurityGroupIngress1",
-    CidrIp="10.0.0.0/16",
-    FromPort="80",
-    ToPort="80",
-    IpProtocol="tcp",
-)
-
 securitygroup = t.add_resource(SecurityGroup(
     "SecurityGroup",
     GroupDescription="Security Group",
-    SecurityGroupIngress=[securitygroupingress1],
+    SecurityGroupIngress=[
+        SecurityGroupRule(
+            "SecurityGroupIngress1",
+            CidrIp="10.0.0.0/16",
+            FromPort="80",
+            ToPort="80",
+            IpProtocol="tcp",
+        )
+    ],
     VpcId=Ref("VPC"),
 ))

{"golden_diff": "diff --git a/examples/RedshiftClusterInVpc.py b/examples/RedshiftClusterInVpc.py\n--- a/examples/RedshiftClusterInVpc.py\n+++ b/examples/RedshiftClusterInVpc.py\n@@ -6,7 +6,7 @@\n from troposphere.redshift import Cluster, ClusterParameterGroup\n from troposphere.redshift import AmazonRedshiftParameter, ClusterSubnetGroup\n from troposphere.ec2 import VPC, Subnet, InternetGateway, VPCGatewayAttachment\n-from troposphere.ec2 import SecurityGroup, SecurityGroupIngress\n+from troposphere.ec2 import SecurityGroup, SecurityGroupRule\n \n \n t = Template()\n@@ -135,18 +135,18 @@\n     InternetGatewayId=Ref(\"InternetGateway\"),\n ))\n \n-securitygroupingress1 = SecurityGroupIngress(\n-    \"SecurityGroupIngress1\",\n-    CidrIp=\"10.0.0.0/16\",\n-    FromPort=\"80\",\n-    ToPort=\"80\",\n-    IpProtocol=\"tcp\",\n-)\n-\n securitygroup = t.add_resource(SecurityGroup(\n     \"SecurityGroup\",\n     GroupDescription=\"Security Group\",\n-    SecurityGroupIngress=[securitygroupingress1],\n+    SecurityGroupIngress=[\n+        SecurityGroupRule(\n+            \"SecurityGroupIngress1\",\n+            CidrIp=\"10.0.0.0/16\",\n+            FromPort=\"80\",\n+            ToPort=\"80\",\n+            IpProtocol=\"tcp\",\n+        )\n+    ],\n     VpcId=Ref(\"VPC\"),\n ))\n", "issue": "Invalid json generated with SecurityGroupIngress\nRef: https://s3-us-west-2.amazonaws.com/cloudformation-templates-us-west-2/EC2InstanceWithSecurityGroupSample.template\n\nInvalid format generated:\n\n``` json\n\"SecurityGroupIngress\": [\n                    {\n                        \"Properties\": {\n                            \"CidrIp\": \"0.0.0.0/0\",\n                            \"FromPort\": \"0\",\n                            \"IpProtocol\": \"-1\",\n                            \"ToPort\": \"65535\"\n                        },\n                        \"Type\": \"AWS::EC2::SecurityGroupIngress\"\n                    }\n                ]\n```\n\nWith the above template AWS will complain:\n\n```\nEncountered unsupported property Type\n```\n\nCorrect format:\n\n``` json\n\"SecurityGroupIngress\": [\n                    {\n                        \"CidrIp\": \"0.0.0.0/0\",\n                        \"FromPort\": \"0\",\n                        \"IpProtocol\": \"-1\",\n                        \"ToPort\": \"65535\"\n                    }\n                ]\n```\n\n", "before_files": [{"content": "# Converted from Redshift.template located at:\n# http://aws.amazon.com/cloudformation/aws-cloudformation-templates/\n\nfrom troposphere import Template, Parameter, Ref, Equals\nfrom troposphere import If, Output, Join, GetAtt\nfrom troposphere.redshift import Cluster, ClusterParameterGroup\nfrom troposphere.redshift import AmazonRedshiftParameter, ClusterSubnetGroup\nfrom troposphere.ec2 import VPC, Subnet, InternetGateway, VPCGatewayAttachment\nfrom troposphere.ec2 import SecurityGroup, SecurityGroupIngress\n\n\nt = Template()\n\nt.add_version(\"2010-09-09\")\n\nt.add_description(\n    \"AWS CloudFormation Sample Template: Redshift cluster in a VPC\")\n\ndbname = t.add_parameter(Parameter(\n    \"DatabaseName\",\n    Description=\"The name of the first database to be created when the \"\n    \"redshift cluster is created\",\n    Type=\"String\",\n    Default=\"defaultdb\",\n    AllowedPattern=\"([a-z]|[0-9])+\",\n))\n\nclustertype = t.add_parameter(Parameter(\n    \"ClusterType\",\n    Description=\"The type of the cluster\",\n    Type=\"String\",\n    Default=\"single-node\",\n    AllowedValues=[\n        \"single-node\",\n        \"multi-mode\"\n    ],\n))\n\nnumberofnodes = t.add_parameter(Parameter(\n    \"NumberOfNodes\",\n    Description=\"The number of compute nodes in the redshift cluster. \"\n    \"When cluster type is specified as: 1) single-node, the NumberOfNodes \"\n    \"parameter should be specified as 1, 2) multi-node, the NumberOfNodes \"\n    \"parameter should be greater than 1\",\n    Type=\"Number\",\n    Default=\"1\",\n))\n\nnodetype = t.add_parameter(Parameter(\n    \"NodeType\",\n    Description=\"The node type to be provisioned for the redshift cluster\",\n    Type=\"String\",\n    Default=\"dw2.large\",\n))\n\nmasterusername = t.add_parameter(Parameter(\n    \"MasterUsername\",\n    Description=\"The user name associated with the master user account for \"\n    \"the redshift cluster that is being created\",\n    Type=\"String\",\n    Default=\"defaultuser\",\n    AllowedPattern=\"([a-z])([a-z]|[0-9])*\",\n    NoEcho=True,\n))\n\nmasteruserpassword = t.add_parameter(Parameter(\n    \"MasterUserPassword\",\n    Description=\"The password associated with the master user account for the \"\n    \"redshift cluster that is being created.\",\n    Type=\"String\",\n    NoEcho=True,\n))\n\nconditions = {\n    \"IsMultiNodeCluster\": Equals(\n        Ref(\"ClusterType\"),\n        \"multi-mode\"\n    ),\n}\n\nfor k in conditions:\n    t.add_condition(k, conditions[k])\n\nredshiftcluster = t.add_resource(Cluster(\n    \"RedshiftCluster\",\n    ClusterType=Ref(\"ClusterType\"),\n    NumberOfNodes=If(\"IsMultiNodeCluster\",\n                     Ref(\"NumberOfNodes\"), Ref(\"AWS::NoValue\")),\n    NodeType=Ref(\"NodeType\"),\n    DBName=Ref(\"DatabaseName\"),\n    MasterUsername=Ref(\"MasterUsername\"),\n    MasterUserPassword=Ref(\"MasterUserPassword\"),\n    ClusterParameterGroupName=Ref(\"RedshiftClusterParameterGroup\"),\n    VpcSecurityGroupIds=Ref(\"SecurityGroup\"),\n    ClusterSubnetGroupName=Ref(\"RedshiftClusterSubnetGroup\"),\n))\n\namazonredshiftparameter1 = AmazonRedshiftParameter(\n    \"AmazonRedshiftParameter1\",\n    ParameterName=\"enable_user_activity_logging\",\n    ParameterValue=\"true\",\n)\n\nredshiftclusterparametergroup = t.add_resource(ClusterParameterGroup(\n    \"RedshiftClusterParameterGroup\",\n    Description=\"Cluster parameter group\",\n    ParameterGroupFamily=\"redshift-1.0\",\n    Parameters=[amazonredshiftparameter1],\n))\n\nredshiftclustersubnetgroup = t.add_resource(ClusterSubnetGroup(\n    \"RedshiftClusterSubnetGroup\",\n    Description=\"Cluster subnet group\",\n    SubnetIds=Ref(\"Subnet\"),\n))\n\nvpc = t.add_resource(VPC(\n    \"VPC\",\n    CidrBlock=\"10.0.0.0/16\",\n))\n\nsubnet = t.add_resource(Subnet(\n    \"Subnet\",\n    CidrBlock=\"10.0.0.0/24\",\n    VpcId=Ref(\"VPC\"),\n))\n\ninternetgateway = t.add_resource(InternetGateway(\n    \"InternetGateway\",\n))\n\ngatewayattachment = t.add_resource(VPCGatewayAttachment(\n    \"GatewayAttachment\",\n    VpcId=Ref(\"VPC\"),\n    InternetGatewayId=Ref(\"InternetGateway\"),\n))\n\nsecuritygroupingress1 = SecurityGroupIngress(\n    \"SecurityGroupIngress1\",\n    CidrIp=\"10.0.0.0/16\",\n    FromPort=\"80\",\n    ToPort=\"80\",\n    IpProtocol=\"tcp\",\n)\n\nsecuritygroup = t.add_resource(SecurityGroup(\n    \"SecurityGroup\",\n    GroupDescription=\"Security Group\",\n    SecurityGroupIngress=[securitygroupingress1],\n    VpcId=Ref(\"VPC\"),\n))\n\nt.add_output(Output(\n    \"ClusterEndpoint\",\n    Value=Join(\":\", [GetAtt(redshiftcluster, \"Endpoint.Address\"),\n               GetAtt(redshiftcluster, \"Endpoint.Port\")]),\n))\n\nprint(t.to_json())\n", "path": "examples/RedshiftClusterInVpc.py"}], "after_files": [{"content": "# Converted from Redshift.template located at:\n# http://aws.amazon.com/cloudformation/aws-cloudformation-templates/\n\nfrom troposphere import Template, Parameter, Ref, Equals\nfrom troposphere import If, Output, Join, GetAtt\nfrom troposphere.redshift import Cluster, ClusterParameterGroup\nfrom troposphere.redshift import AmazonRedshiftParameter, ClusterSubnetGroup\nfrom troposphere.ec2 import VPC, Subnet, InternetGateway, VPCGatewayAttachment\nfrom troposphere.ec2 import SecurityGroup, SecurityGroupRule\n\n\nt = Template()\n\nt.add_version(\"2010-09-09\")\n\nt.add_description(\n    \"AWS CloudFormation Sample Template: Redshift cluster in a VPC\")\n\ndbname = t.add_parameter(Parameter(\n    \"DatabaseName\",\n    Description=\"The name of the first database to be created when the \"\n    \"redshift cluster is created\",\n    Type=\"String\",\n    Default=\"defaultdb\",\n    AllowedPattern=\"([a-z]|[0-9])+\",\n))\n\nclustertype = t.add_parameter(Parameter(\n    \"ClusterType\",\n    Description=\"The type of the cluster\",\n    Type=\"String\",\n    Default=\"single-node\",\n    AllowedValues=[\n        \"single-node\",\n        \"multi-mode\"\n    ],\n))\n\nnumberofnodes = t.add_parameter(Parameter(\n    \"NumberOfNodes\",\n    Description=\"The number of compute nodes in the redshift cluster. \"\n    \"When cluster type is specified as: 1) single-node, the NumberOfNodes \"\n    \"parameter should be specified as 1, 2) multi-node, the NumberOfNodes \"\n    \"parameter should be greater than 1\",\n    Type=\"Number\",\n    Default=\"1\",\n))\n\nnodetype = t.add_parameter(Parameter(\n    \"NodeType\",\n    Description=\"The node type to be provisioned for the redshift cluster\",\n    Type=\"String\",\n    Default=\"dw2.large\",\n))\n\nmasterusername = t.add_parameter(Parameter(\n    \"MasterUsername\",\n    Description=\"The user name associated with the master user account for \"\n    \"the redshift cluster that is being created\",\n    Type=\"String\",\n    Default=\"defaultuser\",\n    AllowedPattern=\"([a-z])([a-z]|[0-9])*\",\n    NoEcho=True,\n))\n\nmasteruserpassword = t.add_parameter(Parameter(\n    \"MasterUserPassword\",\n    Description=\"The password associated with the master user account for the \"\n    \"redshift cluster that is being created.\",\n    Type=\"String\",\n    NoEcho=True,\n))\n\nconditions = {\n    \"IsMultiNodeCluster\": Equals(\n        Ref(\"ClusterType\"),\n        \"multi-mode\"\n    ),\n}\n\nfor k in conditions:\n    t.add_condition(k, conditions[k])\n\nredshiftcluster = t.add_resource(Cluster(\n    \"RedshiftCluster\",\n    ClusterType=Ref(\"ClusterType\"),\n    NumberOfNodes=If(\"IsMultiNodeCluster\",\n                     Ref(\"NumberOfNodes\"), Ref(\"AWS::NoValue\")),\n    NodeType=Ref(\"NodeType\"),\n    DBName=Ref(\"DatabaseName\"),\n    MasterUsername=Ref(\"MasterUsername\"),\n    MasterUserPassword=Ref(\"MasterUserPassword\"),\n    ClusterParameterGroupName=Ref(\"RedshiftClusterParameterGroup\"),\n    VpcSecurityGroupIds=Ref(\"SecurityGroup\"),\n    ClusterSubnetGroupName=Ref(\"RedshiftClusterSubnetGroup\"),\n))\n\namazonredshiftparameter1 = AmazonRedshiftParameter(\n    \"AmazonRedshiftParameter1\",\n    ParameterName=\"enable_user_activity_logging\",\n    ParameterValue=\"true\",\n)\n\nredshiftclusterparametergroup = t.add_resource(ClusterParameterGroup(\n    \"RedshiftClusterParameterGroup\",\n    Description=\"Cluster parameter group\",\n    ParameterGroupFamily=\"redshift-1.0\",\n    Parameters=[amazonredshiftparameter1],\n))\n\nredshiftclustersubnetgroup = t.add_resource(ClusterSubnetGroup(\n    \"RedshiftClusterSubnetGroup\",\n    Description=\"Cluster subnet group\",\n    SubnetIds=Ref(\"Subnet\"),\n))\n\nvpc = t.add_resource(VPC(\n    \"VPC\",\n    CidrBlock=\"10.0.0.0/16\",\n))\n\nsubnet = t.add_resource(Subnet(\n    \"Subnet\",\n    CidrBlock=\"10.0.0.0/24\",\n    VpcId=Ref(\"VPC\"),\n))\n\ninternetgateway = t.add_resource(InternetGateway(\n    \"InternetGateway\",\n))\n\ngatewayattachment = t.add_resource(VPCGatewayAttachment(\n    \"GatewayAttachment\",\n    VpcId=Ref(\"VPC\"),\n    InternetGatewayId=Ref(\"InternetGateway\"),\n))\n\nsecuritygroup = t.add_resource(SecurityGroup(\n    \"SecurityGroup\",\n    GroupDescription=\"Security Group\",\n    SecurityGroupIngress=[\n        SecurityGroupRule(\n            \"SecurityGroupIngress1\",\n            CidrIp=\"10.0.0.0/16\",\n            FromPort=\"80\",\n            ToPort=\"80\",\n            IpProtocol=\"tcp\",\n        )\n    ],\n    VpcId=Ref(\"VPC\"),\n))\n\nt.add_output(Output(\n    \"ClusterEndpoint\",\n    Value=Join(\":\", [GetAtt(redshiftcluster, \"Endpoint.Address\"),\n               GetAtt(redshiftcluster, \"Endpoint.Port\")]),\n))\n\nprint(t.to_json())\n", "path": "examples/RedshiftClusterInVpc.py"}]}