question: add a projection to this list of projections concode_field_sep List<Projection> elements concode_field_sep Projection getProjection concode_elem_sep String[] getAliases concode_elem_sep ProjectionList create concode_elem_sep int getLength concode_elem_sep boolean isGrouped concode_elem_sep String[] getColumnAliases concode_elem_sep String[] getColumnAliases concode_elem_sep String[] getColumnAliases concode_elem_sep String[] getColumnAliases concode_elem_sep String[] getColumnAliases concode_elem_sep String[] getColumnAliases concode_elem_sep String toString concode_elem_sep Type[] getTypes concode_elem_sep Type[] getTypes concode_elem_sep String toSqlString concode_elem_sep String toGroupSqlString
target: ProjectionList function ( Projection arg0 ) { elements . add ( arg0 ) ; return this ; }