public String getFile() {
    return file;
  }
Gets the path to the keytab file

@return a String declaring the keytab file's absolute path
@see VariableReplacementHelper#replaceVariables(String, java.util.Map)
ambari-server/src/main/java/org/apache/ambari/server/serveraction/kerberos/stageutils/ResolvedKerberosKeytab.java