This function removes an the
optional structfrom the object layout.
MCO_RET classname_fieldname_erase( /*IN*/ classname *handle );
| handle | A pointer to a classname handle |
The erase method removes an optional struct field from the object layout and all indexes the field is included into.
| MCO_S_OK | The optional struct was erased successfully |
| MCO_E_EMPTYOPTIONAL | The optional struct field was not yet allocated |