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.json;
  
  import java.lang.reflect.Method;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.function.Function;
  
  public class SimplePropertyDescriptor {
  
    private static final Function<Object, Object> GET_CLASS_NAME =
        obj -> {
          if (obj == null) {
            return null;
          }
  
          if (obj instanceof Class) {
            return ((Class<?>) obj).getName();
          }
  
          return obj.getClass().getName();
        };
  
    private final String name;
    private final Function<Object, Object> read;
    private final Method write;
  
    public SimplePropertyDescriptor(String name, Function<Object, Object> read, Method write) {
      this.name = name;
      this.read = read;
      this.write = write;
    }
  
    public String getName() {
      return name;
    }
  
    public Function<Object, Object> getReadMethod() {
      return read;
    }
  
    public Method getWriteMethod() {
      return write;
    }
  
    public static SimplePropertyDescriptor[] getPropertyDescriptors(Class<?> clazz) {
      Map<String, SimplePropertyDescriptor> properties = new HashMap<>();
  
      properties.put("class", new SimplePropertyDescriptor("class", GET_CLASS_NAME, null));
  
      for (Method m : clazz.getMethods()) {
        if (Class.class.equals(m.getDeclaringClass()) || Object.class.equals(m.getDeclaringClass())) {
          continue;
        }
  
        String methodName = m.getName();
        String propertyName = null;
  
        Method readMethod = null;
        Method writeMethod = null;
  
        if (hasPrefix("is", methodName)) {
          readMethod = m;
          propertyName = uncapitalize(methodName.substring(2));
        } else if (hasPrefix("get", methodName) || hasPrefix("has", methodName)) {
          readMethod = m;
          propertyName = uncapitalize(methodName.substring(3));
        } else if (hasPrefix("set", methodName)) {
          if (m.getParameterCount() == 1) {
            writeMethod = m;
            propertyName = uncapitalize(methodName.substring(3));
          }
        }
  
        if (readMethod != null && readMethod.getParameterCount() != 0) {
          readMethod = null;
        }
  
        Function<Object, Object> read = null;
  
        if (readMethod != null) {
          final Method finalReadMethod = readMethod;
  
          read =
              obj -> {
                try {
                  finalReadMethod.setAccessible(true);
                  return finalReadMethod.invoke(obj);
                } catch (ReflectiveOperationException e) {
                  throw new JsonException(e);
                }
              };
        }
  
        if (readMethod != null || writeMethod != null) {
          SimplePropertyDescriptor descriptor =
              properties.getOrDefault(
                  propertyName, new SimplePropertyDescriptor(propertyName, null, null));
  
          properties.put(
              propertyName,
              new SimplePropertyDescriptor(
                  propertyName,
                  read != null ? read : descriptor.getReadMethod(),
                  writeMethod != null ? writeMethod : descriptor.getWriteMethod()));
        }
      }
  
      SimplePropertyDescriptor[] pdsArray = new SimplePropertyDescriptor[properties.size()];
      return properties.values().toArray(pdsArray);
    }
  
    private static String uncapitalize(String s) {
      return s.substring(0, 1).toLowerCase() + s.substring(1);
    }
  
    private static boolean hasPrefix(String prefix, String methodName) {
      if (methodName.length() < prefix.length() + 1) {
        return false;
      }
  
      if (!methodName.startsWith(prefix)) {
        return false;
      }
  
      return Character.isUpperCase(methodName.charAt(prefix.length()));
    }
  }
  