版本:3.0.0Methods 
- createInstance(config: any, clientId?: string): Promise<Client>
 
- get(clientId: string): Client
 
- getClientKeys(): string[]
 
- getClientPriority(clientName: string): string
 
- getClients(): Map<string, Client>
 
- getDefaultClientName(): string
 
- has(clientId: string): boolean
 
- isHighPriority(clientName: string): boolean
 
- isLowPriority(clientName: string): boolean
 
- isMediumPriority(clientName: string): boolean