'Create a new, empty KnownHostsFile.
Unless you want to erase the current contents of C{savePath}, you want
to use L{KnownHostsFile.fromPath} instead.
@param savePath: The L{FilePath} to which to save new entries.
@type savePath: L{FilePath}'

def __init__(self, savePath):

    self._added = []
    self._savePath = savePath
    self._clobber = True
