@Override
  default @NotNull Key key() {
    return this;
  }
Returns the string representation of this key in minimal form.

<p>If the {@link #namespace()} of this key is {@link #MINECRAFT_NAMESPACE}, only the {@link #value()} will be returned.</p>

@return the string representation
@since 4.15.0
key/src/main/java/net/kyori/adventure/key/Key.java