| Class | Description | 
|---|---|
| PortFileManager | 
 PortFileManager is a singleton that saves the ports in use and creates a file with a ports list when requested. 
 | 
| ServerPort | 
 This immutable class contains information on variable port that is assigned by this class. 
 | 
| ServerPortDto | |
| ServerPortRegistry | 
 This class holds a collection of of all server ports that are formally registered to the platform. 
 | 
| Service | 
 This serves to group  
ServerPort objects under an arbitrary name. | 
| ServiceDto | 
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