使用go的graphql本地客户端mutation

概述 hasura-go-client 的文档中关于mutation部分的描述 For example, to make the following GraphQL mutation: mutation($ep: Episode!, $review: ReviewInput!) { createReview(episode: $ep, review: $review) { stars commentary } } variables { "ep": "JEDI", "review": { "stars": 5, …