code: public boolean isSubTypeOf(JvmTypeReference candidate, Class<?> jvmSuperType,
  			Class<? extends XtendTypeDeclaration> sarlSuperType) {
  		final LightweightTypeReference reference = Utils.toLightweightTypeReference(candidate, this.services);
  		return isSubTypeOf(reference, jvmSuperType, sarlSuperType);
  	}
docs: Replies if the type candidate is a subtype of the given super type.
  
  @param candidate the type to test.
  @param jvmSuperType the expected JVM super-type.
  @param sarlSuperType the expected SARL super-type.
  @return <code>true</code> if the candidate is a sub-type of the super-type.