bbende commented on pull request #4358:
URL: https://github.com/apache/nifi/pull/4358#issuecomment-651772910
Not sure if this is the reason, but try running "install" instead of
"compile".
Here was the output for me:
```
[INFO] --- maven-checkstyle-plugin:3.1.0:check (check-style) @
nifi-toolkit-cli ---
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[19,8]
(imports) UnusedImports: Unused import - org.apache.commons.lang3.StringUtils.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[29,8]
(imports) UnusedImports: Unused import -
org.apache.nifi.toolkit.cli.impl.result.nifi.ProcessGroupsResult.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[31,8]
(imports) UnusedImports: Unused import - org.apache.nifi.web.api.dto.UserDTO.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[32,8]
(imports) UnusedImports: Unused import -
org.apache.nifi.web.api.dto.flow.FlowDTO.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[33,8]
(imports) UnusedImports: Unused import -
org.apache.nifi.web.api.dto.flow.ProcessGroupFlowDTO.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[34,8]
(imports) UnusedImports: Unused import -
org.apache.nifi.web.api.entity.ControllerServiceEntity.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[36,8]
(imports) UnusedImports: Unused import -
org.apache.nifi.web.api.entity.ProcessGroupFlowEntity.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[37,8]
(imports) UnusedImports: Unused import -
org.apache.nifi.web.api.entity.UserEntity.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[40,8]
(imports) UnusedImports: Unused import - java.util.ArrayList.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[41,8]
(imports) UnusedImports: Unused import - java.util.List.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[49,23]
(blocks) LeftCurly: '{' at column 23 should have line break after.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[52,36]
(blocks) LeftCurly: '{' at column 36 should have line break after.
[WARNING]
src/main/java/org/apache/nifi/toolkit/cli/impl/command/nifi/pg/PGCreate.java:[55,50]
(blocks) LeftCurly: '{' at column 50 should have line break after.
```
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