code: // Licensed to the Software Freedom Conservancy (SFC) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The SFC licenses this file
  // to you under the Apache License, Version 2.0 (the
  // "License"); you may not use this file except in compliance
  // with the License.  You may obtain a copy of the License at
  //
  //   http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing,
  // software distributed under the License is distributed on an
  // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  // KIND, either express or implied.  See the License for the
  // specific language governing permissions and limitations
  // under the License.
  
  package org.openqa.selenium;
  
  import java.util.Optional;
  
  /**
   * Describes, in general terms, a webdriver instance. This allows services to query the system at
   * run time and offer instances of particular {@link WebDriver} subclasses should they be available.
   */
  @Beta
  public interface WebDriverInfo {
  
    /**
     * @return A human-readable name that describes the browser.
     */
    String getDisplayName();
  
    /**
     * Describes the smallest set of {@link Capabilities} that could be used to create an instance of
     * this {@link WebDriver} implementation.
     *
     * <p>Note, this set does not need to be exhaustive: the only requirement is that if {@link
     * #isAvailable()} returns {@code true}, the returned {@link Capabilities} can be passed to {@link
     * #createDriver(Capabilities)} and a session will be created.
     *
     * @return The smallest set of {@link Capabilities} required to create an instance of this {@link
     *     WebDriver} implementation.
     */
    Capabilities getCanonicalCapabilities();
  
    /**
     * @return Whether a call to {@link #createDriver(Capabilities)} would succeed if given {@code
     *     capabilities}.
     */
    boolean isSupporting(Capabilities capabilities);
  
    /**
     * @return Whether the driver has enabled the CDP interface.
     */
    boolean isSupportingCdp();
  
    /**
     * @return Whether the driver has enabled the BiDi interface.
     */
    boolean isSupportingBiDi();
  
    /**
     * Often, a {@link WebDriver} instance needs one or more supporting files or executables to be
     * present (such as a vendor-provided executable which speaks the WebDriver Protocol). This means
     * that even though the driver classes might be present in Java, it would make no sense to attempt
     * to instantiate the driver itself.
     *
     * @return Whether the prerequisites required for this {@link WebDriver} are present.
     */
    boolean isAvailable();
  
    /**
     * Checks whether the browser driver is already present on the host machine. Different from {@link
     * #isAvailable()} which uses Selenium Manager to obtain the driver when not present.
     *
     * @return Whether the browser driver is present on the host machine.
     */
    boolean isPresent();
  
    /**
     * Some browsers require all the resources of the current system in order to run (for example,
     * Safari on iOS) and so do not support multiple simultaneous sessions on the same system. Other
     * browsers can create isolated state for each new {@link WebDriver} instance.
     *
     * <p>The count of simultaneous sessions is typically 1, some multiple of the available number of
     * cores, or {@link Integer#MAX_VALUE} if the number is unbounded or no-one cares.
     */
    int getMaximumSimultaneousSessions();
  
    /**
     * Creates a new instance of the {@link WebDriver} implementation. The instance must be killed by
     * sending the "quit" command. If the instance cannot be created because {@link #isAvailable()} is
     * {@code false}, then {@link Optional#empty()} is returned. Otherwise, an attempt to start the
     * session is made and the result returned.
     */
    Optional<WebDriver> createDriver(Capabilities capabilities) throws SessionNotCreatedException;
  }
  