Feedback is a common xml exchange format for generic results.

e.g the following results:

+ Result-1 (SUCCEED)
  |- Message-1
  |~ Key-1: Value-1
  + Result-1 (WARNING)
    |- Message-1
    |- Message-2
    |~ Key-1: Value-1
    |~ Key-2: Value-2
  + Result-2 (WARNING)
    |- Message-1
    |- Message-2
    |~ Key-1: Value-1
    |~ Key-2: Value-2

will be serialized as:

<Feedback>
  <version>0.2.0</version>
  <results>
    <Result>
      <name>Result-1</name>
      <values>
        <string>Message-1</string>
      </values>
      <properties>
        <entry>
          <string>Key-1</string>
          <string>Value-1</string>
        </entry>
      </properties>
      <status>SUCCEED</status>
      <results>
        <Result>
          <name>Result-1</name>
          <values>
            <string>Message-1</string>
            <string>Message-2</string>
          </values>
          <properties>
            <entry>
              <string>Key-1</string>
              <string>Value-1</string>
            </entry>
            <entry>
              <string>Key-2</string>
              <string>Value-2</string>
            </entry>
          </properties>
          <status>WARNING</status>
          <results/>
        </Result>
        <Result>
          <name>Result-2</name>
          <values>
            <string>Message-1</string>
            <string>Message-2</string>
          </values>
          <properties>
            <entry>
              <string>Key-1</string>
              <string>Value-1</string>
            </entry>
            <entry>
              <string>Key-2</string>
              <string>Value-2</string>
            </entry>
          </properties>
          <status>WARNING</status>
          <results/>
        </Result>
      </results>
    </Result>
  </results>
</Feedback>