ensures that the given instantiation for the schemavariable denotes
a static method. For determining the method the callee and the
arguments of the method are needed as arguments.
the static reference condition checks if a suggested
instantiation for a schema variable denotes a static method
call. The flag negation allows to reuse this condition for
ensuring non static references.
tests if the instantiation suggestions goes along with the static
condition
Parameters: var - the template Variable to be instantiated Parameters: subst - the SVSubstitute to be mapped to var Parameters: svInst - the SVInstantiations that are already known to beneeded true iff condition is fulfilled