question: public void addMember ( AbstractResourceUndoState member ) { if ( members == null ) { members = new AbstractResourceUndoState [ ] { member } ; } else { AbstractResourceUndoState [ ] expandedMembers = new AbstractResourceUndoState [ members . length + 1 ] ; System . arraycopy ( members , 0 , expandedMembers , 0 , members . length ) ; expandedMembers [ members . length ] = member ; members = expandedMembers ; } }
target:  Add the specified resource description as a member of this resource description