public SDVariable identity(String name, SDVariable input) {
        SDVariable s = f().identity(input);
        return updateVariableNameAndReference(s, name);
    }
public SDVariable identity ( String name , SDVariable input ) { SDVariable s = f ( ) . identity ( input ) ; return updateVariableNameAndReference ( s , name ) ; }
Elementwise identity operation: out = x

@param name  name of the output variable
@param input Input variable
@return Output variable