Thrown when conflicting ContigNames are found, e.g.
Thrown when conflicting ContigNames are found, e.g. "1" and "chr1".
True iff a contig-name ∈ {1-22,X,Y} with "chr" prefix has been observed.
True iff a contig-name ∈ {1-22,X,Y} with "chr" prefix has been observed. False iff a contig-name ∈ {1-22,X,Y} without "chr" prefix has been observed.