code: @Nonnull
    public IMPLTYPE delete (@Nonnull final IJSExpression aExpr)
    {
      addStatement (new JSDelete (aExpr));
      return thisAsT ();
    }
docs: Insert a <code>delete aExpr;</code> statement
  
  @param aExpr
  the expression to be deleted. May not be <code>null</code>.
  @return this