code: protected boolean isPrimitiveBoolean(JvmTypeReference typeRef) {
  		if (InferredTypeIndicator.isInferred(typeRef)) {
  			return false;
  		}
  		
  		return typeRef != null && typeRef.getType() != null &&
  				!typeRef.getType().eIsProxy() &&
  				"boolean".equals(typeRef.getType().getIdentifier());
  	}
docs: Detects whether the type reference refers to primitive boolean.
  
  @since 2.9