udunits/src/main/java/ucar/units/PrefixDBImpl.java
public void addName(final String name, final double value)
			throws PrefixExistsException {
		final Prefix prefix = new PrefixName(name, value);
		nameSet.add(prefix);
	}
public void addName(final String name, final double value)
			throws PrefixExistsException {
		final Prefix prefix = new PrefixName(name, value);
		nameSet.add(prefix);
	}
Adds a prefix to the database by name.

@param name
The name of the prefix to be added.
@param value
The value of the prefix.
@throws PrefixExistsException
Another prefix with the same name or value already exists in
the database.