Lots of Javadoc errors when running maven javadoc:javadoc

[elharo]

[ERROR] protected Locale getLocale(Object value, Navigator navigator)
[ERROR] ^
[ERROR] /Users/elharo/jaxen/src/java/main/org/jaxen/function/ext/LowerFunction.java:104: warning: no @return
[ERROR] public static String evaluate(Object strArg,
[ERROR] ^
[ERROR] /Users/elharo/jaxen/src/java/main/org/jaxen/function/ext/UpperFunction.java:103: warning: no @return
[ERROR] public static String evaluate(Object strArg,
[ERROR] ^
[ERROR] /Users/elharo/jaxen/src/java/main/org/jaxen/javabean/DocumentNavigator.java:83: warning: no @return
[ERROR] public static Navigator getInstance()
[ERROR]

[elharo]

Mostly fixed except for

[WARNING] /Users/elharo/jaxen/core/src/java/main/org/jaxen/BaseXPath.java:85: warning - Tag @see: reference not found: org.jaxen.dom4j.Dom4jXPath XPath for dom4j
[WARNING] /Users/elharo/jaxen/core/src/java/main/org/jaxen/BaseXPath.java:85: warning - Tag @see: reference not found: org.jaxen.jdom.JDOMXPath   XPath for JDOM
[WARNING] /Users/elharo/jaxen/core/src/java/main/org/jaxen/Context.java:66: warning - Tag @see: reference not found: org.jaxen.dom4j.Dom4jXPath XPath for dom4j
[WARNING] /Users/elharo/jaxen/core/src/java/main/org/jaxen/Context.java:66: warning - Tag @see: reference not found: org.jaxen.jdom.JDOMXPath  XPath for JDOM
[WARNING] /Users/elharo/jaxen/core/src/java/main/org/jaxen/ContextSupport.java:57: warning - Tag @see: reference not found: org.jaxen.dom4j.Dom4jXPath XPath for dom4j
[WARNING] /Users/elharo/jaxen/core/src/java/main/org/jaxen/ContextSupport.java:57: warning - Tag @see: reference not found: org.jaxen.jdom.JDOMXPath   XPath for JDOM
[WARNING] /Users/elharo/jaxen/core/src/java/main/org/jaxen/XPath.java:57: warning - Tag @see: reference not found: org.jaxen.dom4j.Dom4jXPath XPath for dom4j
[WARNING] /Users/elharo/jaxen/core/src/java/main/org/jaxen/XPath.java:57: warning - Tag @see: reference not found: org.jaxen.jdom.JDOMXPath  XPath for JDOM