Objects.requireNonNull(repositoryEventDispatcher, "repositoryEventDispatcher cannot be null");
    }

    @SuppressWarnings("checkstyle:methodlength")
    @Override
    public VersionResult resolveVersion(RepositorySystemSession session, VersionRequest request)
            throws VersionResolutionException {
        RequestTrace trace = RequestTrace.newChild(request.getTrace(), request);

                a = a.setVersion(versionResult.getVersion());

                versionRequest =
                        new VersionRequest(pomArtifact, request.getRepositories(), request.getRequestContext());
                versionRequest.setTrace(trace);
                versionResult = versionResolver.resolveVersion(session, versionRequest);

      <artifactId>asm</artifactId>
    </dependency>

    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-tools</artifactId>
      <version>${resolverVersion}</version>
      <scope>test</scope>
      <exclusions>
        <exclusion>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-nop</artifactId>
        </exclusion>
      </exclusions>

     *
     * @see org.apache.maven.api.services.VersionResolver#resolve(Session, ArtifactCoordinates) (String)
     */
    @Nonnull
    Version resolveVersion(@Nonnull ArtifactCoordinates artifact);

    /**
     * Expands a version range to a list of matching versions, in ascending order.
     * For example, resolves "[3.8,4.0)" to "3.8", "3.8.1", "3.8.2".