cdm/src/main/java/ucar/nc2/dataset/CoordSysBuilder.java
static public void registerConvention(String conventionName, String className) throws ClassNotFoundException {
    Class c = Class.forName(className);
    registerConvention(conventionName, c, null);
  }
static public void registerConvention(String conventionName, String className) throws ClassNotFoundException {
    Class c = Class.forName(className);
    registerConvention(conventionName, c, null);
  }
Register a class that implements a Convention.

@param conventionName name of Convention.
This name will be used to look in the "Conventions" global attribute.
Otherwise, you must implement the isMine() static method.
@param className      name of class that implements CoordSysBuilderIF.
@throws ClassNotFoundException if class could not be loaded