A pangenome graph reference of 30 chicken genomes allows genotyping of large and complex structural variants by Rice, ES, Alberdi, A, Alfieri, J, Athrey, G, Balacco, JR, Bardou, P, Blackmon, H, Charles, M, Cheng, HH, Fedrigo, O, Fiddaman, SR, Formenti, G, Frantz, LAF, Gilbert, MTP, Hearn, CJ, Jarvis, ED, Klopp, C, Marcos, S, Mason, AS, Velez-Irizarry, D, Xu, L, Warren, WC