model.methodCall(<tag>) represents a method call for a model method.
model.methodCall().create(<tag>,<methodname>) creates a method call for the model method
<methodname> with the given tag.
model.methodCall(<tag>).inputNames(); returns the names of input parameters of a method reference by a given method call.
model.methodCall(<tag>).methodName returns the name of the method that the method call runs.
model.methodCall(<tag>).methods(); returns the names of all methods in the model.
model.methodCall(<tag>).run() runs the method call with the tag
<tag>.