LinkageCheckerMain shows duplicate causes

Bắt đầu tại LinkageCheckerMain.java:76 và tái hiện đầu ra trùng lặp của "Dependency conflict" bằng ví dụ Beam và gist được liên kết. Theo dõi cách các nguyên nhân được thu thập hoặc hiển thị, sau đó xác minh rằng mỗi lỗi linkage chỉ báo cáo xung đột một lần.

When running LinkageCheckerMain for Beam, https://gist.github.com/suztomo/0ba02d93aa0b2f5d9701c50f7d7fd81f had duplicate "Dependency conflict" cause for one linkage error. For example:

Class com.google.pubsub.v1.DeleteSchemaRequest is not found;
Exception in thread "main"   referenced by 2 class files
    com.google.cloud.pubsub.v1.stub.GrpcSchemaServiceStub (com.google.cloud:google-cloud-pubsub:1.111.0)
    com.google.cloud.pubsub.v1.SchemaServiceClient (com.google.cloud:google-cloud-pubsub:1.111.0)
  Cause:
    Dependency conflict: com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 does not define Class com.google.pubsub.v1.DeleteSchemaRequest but com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 defines it.
      selected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 (compile)
      unselected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.cloud:google-cloud-pubsub:1.111.0 (compile) / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 (compile)
    Dependency conflict: com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 does not define Class com.google.pubsub.v1.DeleteSchemaRequest but com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 defines it.
      selected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 (compile)
      unselected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.cloud:google-cloud-pubsub:1.111.0 (compile) / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 (compile)

and

Class com.google.pubsub.v1.ListSchemasResponse is not found;
  referenced by 3 class files
        at com.google.cloud.tools.opensource.classpath.LinkageCheckerMain.main(LinkageCheckerMain.java:76)
    com.google.cloud.pubsub.v1.stub.SchemaServiceStubSettings (com.google.cloud:google-cloud-pubsub:1.111.0)
    com.google.cloud.pubsub.v1.stub.GrpcSchemaServiceStub (com.google.cloud:google-cloud-pubsub:1.111.0)
    com.google.cloud.pubsub.v1.SchemaServiceClient (com.google.cloud:google-cloud-pubsub:1.111.0)
  Cause:
    Dependency conflict: com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 does not define Class com.google.pubsub.v1.ListSchemasResponse but com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 defines it.
      selected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 (compile)
      unselected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.cloud:google-cloud-pubsub:1.111.0 (compile) / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 (compile)
    Dependency conflict: com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 does not define Class com.google.pubsub.v1.ListSchemasResponse but com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 defines it.
      selected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 (compile)
      unselected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.cloud:google-cloud-pubsub:1.111.0 (compile) / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 (compile)
    Dependency conflict: com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 does not define Class com.google.pubsub.v1.ListSchemasResponse but com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 defines it.
      selected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.90.3 (compile)
      unselected: org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.29.0-SNAPSHOT / com.google.cloud:google-cloud-pubsub:1.111.0 (compile) / com.google.api.grpc:proto-google-cloud-pubsub-v1:1.93.0 (compile)