Change get_Slice(): check that slice can be created before getting the sub_Slice corresponding to this GenomicAlign. Returns undef on failure.
Change get_Slice(): check that slice can be created before getting the sub_Slice corresponding to this GenomicAlign. Returns undef on failure.

Ensembl/ensembl-compara,ckongEbi/ensembl-compara,etapanari/ensembl-compara,danstaines/ensembl-compara,dbolser-ebi/ensembl-compara,kumarsaurabh20/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,etapanari/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,etapanari/ensembl-compara,kumarsaurabh20/ensembl-compara,etapanari/ensembl-compara,ckongEbi/ensembl-compara,dbolser-ebi/ensembl-compara,Ensembl/ensembl-compara,ckongEbi/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,kumarsaurabh20/ensembl-compara,kumarsaurabh20/ensembl-compara,dbolser-ebi/ensembl-compara