According to JCR, a path without a same-name-sibling index should be treated equivalently to a path where the same-name-sibling indexes are all 1. For example, "/a/b/c" should be equivalent to "/a[1]/b[1]/c[1]". (See section 4.3.1 of the JSR-170 specification for details.) This is not the case with the BasicPathSegment implementation of Path.Segment.