create an abstract class for creators of crds
[refactoring] mode the abstract creator for crd into a new package
add a field for the head strings
create an interface to have constants
define the template to create crd elements in the abstract creator!
implement a crd creator for catch clauses
implement a crd creator for do statements
add a constant which represents a divider for conditional predicates on crds
implement a crd creator for else statements
implement a crd creator for enhanced for statements
implement a crd creator for finally blocks
implement a crd creator for for statements
implement a crd creator for if statements
implement a crd creator for methods
implement a crd creator for switch statements
implement a crd creator for synchronized statements
implement a crd creator for try statements
implement a crd creator for classes
implement a crd creator for while statements