s some of the following attributes:

* :c - true if the stack frame is a c function invocation

* :column - the current source column of the stack frame

* :function - the function that the stack frame represents

* :line - the current source line of the stack frame

* :name - the human-friendly name of the function

* :pc - integer indicating the location of the program counter

* :source - string with the file path or other identifier for the source code

* :slots - array of all values in each slot

* :ta