The sources (https://github.com/graphql-java/graphql-java/blob/master/src/main/java/graphql/execution/instrumentation/adapters/ExecuteObjectInstrumentationContextAdapter.java) were removed in https://github.com/graphql-java/graphql-java/pull/3460, but the file remained (probably due to conflict resolution).
The sources (https://github.com/graphql-java/graphql-java/blob/master/src/main/java/graphql/execution/instrumentation/adapters/ExecuteObjectInstrumentationContextAdapter.java) were removed in #3460, but the file remained (probably due to conflict resolution).