code: public void setInverseIsA(String... inverseIsA) {
          ProtempaUtil.checkArrayForNullElement(inverseIsA, "inverseIsA");
          ProtempaUtil.checkArrayForDuplicates(inverseIsA, "inverseIsA");
          this.inverseIsA = inverseIsA.clone();
          recalculateChildren();
      }
docs: Sets the children of this proposition definition.
  
  @param inverseIsA a {@link String[]} of proposition definition ids. No
  <code>null</code> or duplicate elements allowed.