private void blockCommentBegin() {
    /** asdsfsdf /*asdsdfsdsd */
    // why dis-allow this??? It's allowed in Java. It was probably because '/*' is considered as a
    // command by Roo.
    Assert.isTrue(!inBlockComment, "Cannot open a new block comment when one already active");
    inBlockComment = true;
  }
Utility based on code extracted from
{@link org.springframework.shell.core.AbstractShell#executeCommand(String)}

@since GemFire 7.0
geode-gfsh/src/main/java/org/apache/geode/management/internal/cli/util/CommentSkipHelper.java