docs: func (c *Cloud9) CreateEnvironmentMembershipWithContext(ctx aws.Context, input *CreateEnvironmentMembershipInput, opts ...request.Option) (*CreateEnvironmentMembershipOutput, error) {
  	req, out := c.CreateEnvironmentMembershipRequest(input)
  	req.SetContext(ctx)
  	req.ApplyOptions(opts...)
  	return out, req.Send()
  }