Advanced utility functions

Use com.nomagic.uml2.ext.jmi.helpers.ModelHelper for various advanced UML model related functions.

It provides utility methods for

Some core functions
- working with element's documentation (Comments)
- getting/setting Relationships client and supplier ends
- working with Associations - getting member ends, changing navigability
- working with multiplicity of MultiplicityElements
- ownership related functions - looking for valid owners, checking ownership and etc.
Working with Value Specifications
- Creating value specifications
- Setting value to Value specifications
Working with Classifiers
- collecting derived classifiers, checking legal inheritance
- collecting inherited members
- working with redefined elements
- checking Classifiers compatibility
- working with Operation parameters, comparing Operations signatures
Working with InstanceSpecifications
- creating Slots, initializing slots values
- working with Links

Use com.nomagic.uml2.ext.jmi.helpers.InformationFlowHelper for advanced Information Flows related functions

Use com.nomagic.uml2.ext.jmi.helpers.InteractionHelper for Interaction domain related advanced functions