nl: returns the source index of this type variable maplet . concode_field_sep String fSourceName concode_elem_sep int fTargetIndex concode_elem_sep int fSourceIndex concode_elem_sep String fTargetName concode_field_sep String getSourceName concode_elem_sep int getTargetIndex concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep String getTargetName
code: int function ( ) { return fSourceIndex ; }