public @NotNull Variable addVariable(@NonNls @NotNull String name, @NotNull Expression defaultValueExpression, boolean isAlwaysStopAt) {
    return addVariable(name, defaultValueExpression, defaultValueExpression, isAlwaysStopAt);
  }
public @NotNull Variable addVariable(@NonNls @NotNull String name, @NotNull Expression defaultValueExpression, boolean isAlwaysStopAt)