code: public Set<ConnectorType> getConnectorTypesFromEvses(Set<Evse> evses) {
          Set<ConnectorType> connectorTypes = new HashSet<>();
          for (Evse evse : evses) {
              for (Connector connector : evse.getConnectors()) {
                  connectorTypes.add(ConnectorType.fromConnectorType(connector.getConnectorType()));
              }
          }
          return connectorTypes;
      }
docs: Creates a set of {@code ConnectorType} based on the EVSEs. Duplicates will be filtered.
  
  @param evses list of EVSEs
  @return set of connector types