key = $key; return $this; } public function set_disabled( bool $disabled ): self { $this->disabled = $disabled; return $this; } public function set_prop_type( Transformable_Prop_Type $prop_type ): self { $this->prop_type = $prop_type; return $this; } public function get_key(): ?string { return $this->key; } public function is_disabled(): bool { return $this->disabled; } public function get_prop_type(): ?Transformable_Prop_Type { return $this->prop_type; } }