Folder with same name extension

Hi, I am new user on Nuxeo Plateform.

When I create two or more files with the same name on the same directory I can see Floder.XXXXXXXX and Folder.YYYYYYY on the cmis:segmentPath. What does the extension .XXXXXXX or .XXXXXXXX (where X is a number 1-9) mean? How can I drop this extension ?

When I try to call getObjectByPath with folder path like getObjectByPath(1), I have no object found error.