cdm/src/main/java/thredds/inventory/partition/DirectoryCollection.java
public static String makeCollectionName(String topCollectionName, Path dir) {
    int last = dir.getNameCount()-1;
    Path lastDir = dir.getName(last);
    String lastDirName = lastDir.toString();
    return topCollectionName +"-" + lastDirName;
  }
public static String makeCollectionName(String topCollectionName, Path dir) {
    int last = dir.getNameCount()-1;
    Path lastDir = dir.getName(last);
    String lastDirName = lastDir.toString();
    return topCollectionName +"-" + lastDirName;
  }
public static String makeCollectionName ( String topCollectionName , Path dir ) { int last = dir . getNameCount ( ) - 1 ; Path lastDir = dir . getName ( last ) ; String lastDirName = lastDir . toString ( ) ; return topCollectionName + "-" + lastDirName ; }
Create standard name = topCollectionName + last directory
@param topCollectionName from config, name of the collection
@param dir directory for this
@return  standard collection name, to name the index file
Create standard name = topCollectionName + last directory