Returns {@code true} if this Subject has the specified role, {@code false} otherwise.
@param roleIdentifier the application-specific role identifier (usually a role id or role name).
@return {@code true} if this Subject has the specified role, {@code false} otherwise.
Returns {@code true} if this Subject has the specified role, {@code false} otherwise.
@param roleIdentifier the application-specific role identifier (usually a role id or role name). @return {@code true} if this Subject has the specified role, {@code false} otherwise.