message: refactor(service:check): Rename `configName` to `graphName`
  `configName` is ambiguous in the world where we're now considering the
  result of composition a "graph" and the partial schemas that comprise a
  federated graph "service."
diff: @@ -268,10 +268,15 @@ export default class ServiceCheck extends ProjectCommand {
  );
  }
  - const configName = config.name;
  + /**
  + * Name of the graph being checked. `engine` is an example of a graph.
  + *
  + * A graph can be either a monolithic schema or the result of composition a federated schema.
  + */
  + const graphName = config.name;
  const tag = flags.tag || config.tag || "current";
  - if (!configName) {
  + if (!graphName) {
  throw new Error("No service found to link to Engine");
  }
  @@ -279,7 +284,7 @@ export default class ServiceCheck extends ProjectCommand {
  {
  title: `Validating local schema against tag ${chalk.blue(
  tag
  - )} on service ${chalk.blue(configName)}`,
  + )} on service ${chalk.blue(graphName)}`,
  task: async (ctx: TasksOutput, task) => {
  task.output = "Resolving schema";
  taskOutput.shouldOutputJson = flags.json;
  @@ -300,7 +305,7 @@ export default class ServiceCheck extends ProjectCommand {
  errors,
  compositionValidationDetails
  } = await project.engine.checkPartialSchema({
  - id: configName,
  + id: graphName,
  graphVariant: tag,
  implementingServiceName: flags.serviceName || info.name,
  partialSchema: {
  @@ -336,7 +341,7 @@ export default class ServiceCheck extends ProjectCommand {
  task.output = "Validating schema";
  const variables: CheckSchemaVariables = {
  - id: configName,
  + id: graphName,
  // @ts-ignore
  // XXX Looks like TS should be generating ReadonlyArrays instead
  schema: introspectionFromSchema(schema).__schema,
  