pub fn modify_subgraph_request_headers(
header_rule_plan: &HeaderRulesPlan,
subgraph_name: &str,
client_request: &ClientRequestDetails<'_>,
output_headers: &mut HeaderMap,
) -> Result<(), HeaderRuleRuntimeError>pub fn modify_subgraph_request_headers(
header_rule_plan: &HeaderRulesPlan,
subgraph_name: &str,
client_request: &ClientRequestDetails<'_>,
output_headers: &mut HeaderMap,
) -> Result<(), HeaderRuleRuntimeError>