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API > API/Runtime > API/Runtime/DatasmithCore > API/Runtime/DatasmithCore/IDatasmithMaterialExpression
References
| Module | DatasmithCore |
| Header | /Engine/Source/Runtime/Datasmith/DatasmithCore/Public/DatasmithMaterialElements.h |
| Include | #include "DatasmithMaterialElements.h" |
int32 GetDefaultOutputIndex() const
Remarks
The output index to use by default for this expression when connecting it to other inputs.