@Contract(pure = true)
  @Override
  default @NotNull Component decoration(final @NotNull TextDecoration decoration, final boolean flag) {
    return StyleSetter.super.decoration(decoration, flag);
  }
Sets the state of a decoration on this component.

@param decoration the decoration
@param flag {@code true} if this component should have the decoration, {@code false} if
    this component should not have the decoration
@return a component
@since 4.0.0
api/src/main/java/net/kyori/adventure/text/Component.java