TNFRSF8 and classic Hodgkin lymphoma: Relapsed and/or refractory (R/R) systemic anaplastic large cell lymphoma (2011); R/R primary cutaneous anaplastic large cell lymphoma or CD30+ mycosis fungoides (2017); Classical Hodgkin lymphoma, systemic anaplastic large cell lymphoma, or CD30+ peripheral T‐cell lymphoma (2018)