private String getH2FileUrl() {

			// Remove H2 db file extension if present
			String dbName = serverInfo.getDBName();
			int ix = dbName.lastIndexOf(BSimServerInfo.H2_FILE_EXTENSION);
			if (ix > 0) {
				dbName = dbName.substring(0, ix);
			}

			// On Windows we must remove the leading separator before the drive letter
			if (File.separatorChar == '\\' && dbName.length() > 3 && dbName.charAt(0) == '/' &&
				Character.isLetter(dbName.charAt(1)) && dbName.charAt(2) == ':') {
				// Remove leading '/' before drive letter
				dbName = dbName.substring(1);
			}

			return "jdbc:h2:" + dbName;
		}
Determine if the stored DB file exists.
@return true if the stored DB file exists
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/file/BSimH2FileDBConnectionManager.java