```ruby
# frozen_string_literal: true
module GirFFI
  module FFIExt
    # Extensions to FFI::Pointer
    module Pointer
      def to_ptr
        self
      end

      def zero?
        null?
      end

      # FIXME: Should probably not be here.
      def to_object
        return nil if null?
        gtype = GObject.type_from_instance_pointer self
        Builder.build_by_gtype(gtype).direct_wrap self
      end

      def to_utf8
        null? ? nil : read_string.force_encoding('utf-8')
      end
    end
  end
end

FFI::Pointer.send :include, GirFFI::FFIExt::Pointer

FFI::Pointer.class_eval do
  case FFI.type_size(:size_t)
  when 4
    alias_method :get_size_t, :get_uint32
  when 8
    alias_method :get_size_t, :get_uint64
  end

  alias_method :get_gtype, :get_size_t
end
```

Use prepend for FFI::Pointer monkey patching
user
```ruby
# frozen_string_literal: true
module GirFFI
  module FFIExt
    # Extensions to FFI::Pointer
    module Pointer
      def to_ptr
        self
      end

      def zero?
        null?
      end

      # FIXME: Should probably not be here.
      def to_object
        return nil if null?
        gtype = GObject.type_from_instance_pointer self
        Builder.build_by_gtype(gtype).direct_wrap self
      end

      def to_utf8
        null? ? nil : read_string.force_encoding('utf-8')
      end
    end
  end
end

FFI::Pointer.prepend GirFFI::FFIExt::Pointer

FFI::Pointer.class_eval do
  case FFI.type_size(:size_t)
  when 4
    alias_method :get_size_t, :get_uint32
  when 8
    alias_method :get_size_t, :get_uint64
  end

  alias_method :get_gtype, :get_size_t
end
```
assistant