text: const Schema = `
  type Query {
  	users: [User]
  	messages: [Message]
  }
  
  type User {
  	id: ID!
  	name: String!
  	email: String!
  	messages: [Message]
  }
  
  type Message {
  	id: ID!
  	message: String!
  	senderMail: String!
  	receiverMail: String!
  	timestamp: Float!
  	users: [User]
  }
  
  type Mutation {
  	createUser(name: String! email: String!): User!
  	updateUser(id: ID! name: String!): User!
  	deleteUser(email: String!): Boolean!
  	userTyping(email: String! receiverMail: String!): Boolean!
  
  	createMessage(senderMail: String! receiverMail: String! message: String! timestamp: Float!): Message!
  	updateMessage(id: ID! message: String!): Message!
  	deleteMessage(id: String!): Boolean!
  }
  
  type Subscription {
  	newMessage(receiverMail: String!): Message
  	newUser: User
  	oldUser: String
  	userTyping (receiverMail: String!): String
  }
  `;
  module.exports = Schema;
  