Maybe you disagree, but I think it's legitimate for a private type to have doc comments.  Basically, we're saying that users don't need to worry about this at all (that's why it's @private) but for use internally (including by users making changes to `CentralBodySurface`), it's helpful to have comments describing how things work.  Perhaps the comments on private types shouldn't use /** */ comments and the jsdoc tags?  I guess for consistency I should have put similar comments on the new method, in any case, though I could argue that a no-parameter clear method on a queue type doesn't leave much to the imagination.