code: protected Boolean _hasSideEffects(XAssignment expression, ISideEffectContext context) {
  		if (internalHasOperationSideEffects(expression, context, true)) {
  			return true;
  		}
  		if (hasSideEffects(expression.getValue(), context)) {
  			return true;
  		}
  		final JvmIdentifiableElement feature = expression.getFeature();
  		if (feature instanceof XVariableDeclaration) {
  			context.assignVariable(feature.getIdentifier(), expression.getValue());
  		}
  		return false;
  	}
docs: Test if the given expression has side effects.
  
  @param expression the expression.
  @param context the list of context expressions.
  @return {@code true} if the expression has side effects.