/**
* @param binding must be correspond to a type, method or field declaration.
* @return the ast node the corresponds to the declaration of the given binding. Return null if
* none is found.
*/
public ASTNode getASTNodeForBinding(final IBinding binding) {
final CompilationUnit astUnit = getCompilationUnitForBinding(binding);
if (astUnit == null) return null;
return astUnit.findDeclaringNode(binding.getKey());
}
