https://hasura.io/docs/1.0/graphql/manual/api-reference/schema-metadata-api/syntax-defs.html#headerfromenv
Name of the header
Name of the environment variable which holds the value of the header
Generated using TypeDoc
https://hasura.io/docs/1.0/graphql/manual/api-reference/schema-metadata-api/syntax-defs.html#headerfromenv