func RegisterForTesting() {
	httpfilter.Register(builder{})
}
RegisterForTesting registers the RBAC HTTP Filter for testing purposes, regardless
of the RBAC environment variable. This is needed because there is no way to set the RBAC
environment variable to true in a test before init() in this package is run.
package rbac
import (
	"context"
	"errors"
	"fmt"
	"strings"
	"github.com/golang/protobuf/proto"
	"github.com/golang/protobuf/ptypes"
	"google.golang.org/grpc/internal/resolver"
	"google.golang.org/grpc/internal/xds/env"
	"google.golang.org/grpc/internal/xds/rbac"
	"google.golang.org/grpc/xds/internal/httpfilter"
	"google.golang.org/protobuf/types/known/anypb"
	v3rbacpb "github.com/envoyproxy/go-control-plane/envoy/config/rbac/v3"
	rpb "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/http/rbac/v3"
)
func init() {
	if env.RBACSupport {
		httpfilter.Register(builder{})
	}
}