[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] object type obligations OCL as constraint language as query language syntax OCL metamodel OCL Standard Library OclAny oclAsType 2nd oclIsKindOf oclIsTypeOf 2nd 3rd oclType 2nd OMG operation parameters operation definition 2nd operation:class class operation optional multiplicity multiplicity:optional OrderedSet 2nd |