ref="https://json-ld.org/spec/latest/json-ld-api/index.html#widl-JsonLdProcessor-flatten-Promise-any-input-JsonLdContext-context-JsonLdOptions-options">flatten</a> method with the input argument from <code>mf:action</code> (aliased as &quot;input&quot; in test manifest) referencing a JSON-LD file, optional context from <code>:input</code> (aliased as &quot;context&quot; in the test manifest) and optional options from <code>:option</code>. The expected results for a <code>PositiveEvaluationTest</code> MUST b