Additional test methods are required for
removeOperation. The existing test method specifies an
operation name and null values for the input and output
message name arguments. To fully test the expected
behaviour as described in the API Javadoc for these
methods, two further test methods are required - one to
test for a named operation with named input and output
messages and another to test for a named operation with
unnamed input and output messages (i.e. with ":none"
specified for the input and output message name arguments).