How to add a Http header in Graphql http response?

[hariraogotit]

Team,

I am using spring boot and I use the following

'com.graphql-java-kickstart:graphql-spring-boot-starter:14.1.0'
'com.graphql-java-kickstart:graphiql-spring-boot-starter:11.1.0'
'com.graphql-java-kickstart:graphql-java-tools:13.0.2'

I am using two resolvers GraphQLMutationResolver and GraphQLQueryResolver. I do have some Filters.
I would like to know how to add a header to the response of Graphql
eg httpResponse.addHeader("traceId", "A random generated UUID")

I tried adding in some of the filters but I dont see in the response of graphqlTestTemplate. Any leads are much appreciated.
I am new to graphql world. So kindly excuse me if my question is basic.

Thanks
Hari