Fix build

Author: gnawf

lib/src/main/java/graphql/nadel/engine/util/GraphQLUtil.kt

@@ -44,7 +44,10 @@ import graphql.nadel.instrumentation.parameters.NadelInstrumentationExecuteOpera
 import graphql.nadel.util.ErrorUtil.createGraphQLErrorsFromRawErrors
 import graphql.normalized.ExecutableNormalizedField
 import graphql.normalized.ExecutableNormalizedOperation
+import graphql.normalized.ExecutableNormalizedOperationToAstCompiler
+import graphql.normalized.ExecutableNormalizedOperationToAstCompiler.CompilerResult
 import graphql.normalized.NormalizedInputValue
+import graphql.normalized.VariablePredicate
 import graphql.schema.FieldCoordinates
 import graphql.schema.GraphQLCodeRegistry
 import graphql.schema.GraphQLFieldDefinition
@@ -556,7 +559,7 @@ fun compileToDocument(
     operationName: String?,
     topLevelFields: List<ExecutableNormalizedField>,
     variablePredicate: VariablePredicate?,
-): ExecutableNormalizedOperationToAstCompiler.CompilerResult {
+): CompilerResult {
     return ExecutableNormalizedOperationToAstCompiler.compileToDocument(
         schema,
         operationKind,