question: returns null until #executebuild iterable , boolean is invoked . concode_field_sep ArtifactCache artifactCache concode_elem_sep ExecutionContext executionContext concode_elem_sep BuildEngine buildEngine concode_elem_sep ActionGraph actionGraph concode_elem_sep Clock clock concode_elem_sep BuildContext buildContext concode_elem_sep JavaPackageFinder javaPackageFinder concode_elem_sep Predicate<Optional<BuildResult>> RULES_FAILED_PREDICATE concode_elem_sep DefaultStepRunner stepRunner concode_field_sep LinkedHashMap<BuildRule,Optional<BuildResult>> executeBuild concode_elem_sep boolean apply concode_elem_sep ExecutionContext getExecutionContext concode_elem_sep int executeAndPrintFailuresToEventBus concode_elem_sep ActionGraph getActionGraph concode_elem_sep String getFailureMessage concode_elem_sep void close
target: BuildContext function ( ) { return buildContext ; }