internal bool TryGetFunctionImportMapping(EdmFunction functionImport, out FunctionImportMapping mapping)
 {
     return(m_functionImportMappings.TryGetValue(functionImport, out mapping));
 }
 // Methods to modify and access function imports, which association a "functionImport" declared
 // in the model entity container with a targetFunction declared in the target
 internal void AddFunctionImportMapping(EdmFunction functionImport, FunctionImportMapping mapping)
 {
     m_functionImportMappings.Add(functionImport, mapping);
 }