You can show the operations of classifiers with the full signature
of parameters along with the full package names in class diagrams.
You must be in the C/C++ perspective and have a diagram open in the
diagram editor.
Note: If you do not show operation signatures,
the parameters and return types do not appear in the diagram.
To show the operation signature of a classifier, in the diagram editor,
right-click a classifier; then click .
Note: If the Show Parent Name option
is also enabled, the parameter types are displayed with the full package name.