PowerMock.mockStatic(NodeModelUtils.class);
expect(NodeModelUtils.findNodesForFeature(args, LangPackage.Literals.LEXER_COMMAND_EXPR__REF))
.andReturn(Arrays.asList(node));
Antlr4Validator validator = PowerMock.createPartialMock(Antlr4Validator.class, "warning");
PowerMock.expectPrivate(validator, "warning",
"rule 'RULE' contains a lexer command with an unrecognized " +
"constant value; lexer interpreters may produce incorrect output",
args, feature);
Object[] mocks = {rule, command, args, ref, eClass, feature, validator, node };
PowerMock.replay(NodeModelUtils.class);
replay(mocks);
validator.commandWithUnrecognizedConstantValue(command);
verify(mocks);
PowerMock.verify(NodeModelUtils.class);
}