public CheckResult check() {
    return CheckResult.OK;
  }
Answers the question: Are operations on this component likely to succeed?

<p>Implementations should initialize the component if necessary. It should test a remote
connection, or consult a trusted source to derive the result. They should use least resources
possible to establish a meaningful result, and be safe to call many times, even concurrently.

@see CheckResult#OK
zipkin/src/main/java/zipkin2/Component.java