Github user zentol commented on the issue:
https://github.com/apache/flink/pull/4343
The switch statements can be modified to be checkstyle compliant with few
changes.
`NestedMethodAnalyzer#naryOperation`:
```
...
case INVOKESTATIC:
case INVOKESPECIAL:
case INVOKEVIRTUAL:
case INVOKEINTERFACE:
isStatic = insn.getOpCoed() == INVOKESTATIC;
...
```
`NestedMethodAnalyzer#copyOperation`:
```
...
case DUP2_X2:
if (isTagged(value) && tagged(value).isInput() &&
tagged(value).isCallByValue()) {
return tagged(value).copy();
} else {
return super.copyOperation(insn, value);
}
...
```
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