code: /*
  com.puppycrawl.tools.checkstyle.checks.naming.MemberNameCheck
  format = (default)^[a-z][a-zA-Z0-9]*$
  applyToPublic = (default)true
  applyToProtected = (default)true
  applyToPackage = (default)true
  applyToPrivate = (default)true
  
  
  */
  
  //Issue #2729
  package com.puppycrawl.tools.checkstyle.grammar.java8;
  import java.util.Arrays;
  
  
  public class InputMethodReferences4 { // ok
      public void doSomething(final Object... arguments) {
          Arrays.stream(arguments)
                  .map(Object::getClass)
                  .toArray(Class<?>[]::new);
      }
  }
  