B2 (final com.google.common.collect.Table<? extends Number, ? extends Float, ? extends String> extendsGenerics) { if (extendsGenerics == null) { throw new java.lang.NullPointerException("extendsGenerics cannot be null"); } if (this.extendsGenerics == null) this.extendsGenerics = com.google.common.collect.ImmutableTable.builder(); this.extendsGenerics.putAll(extendsGenerics); return self(); }