presto-main/src/main/java/io/prestosql/sql/gen/JoinFilterFunctionCompiler.java/JoinFilterCacheKey/equals
class JoinFilterCacheKey:        @Override
        public boolean equals(Object o)
        {
            if (this == o) {
                return true;
            }
            if (o == null || getClass() != o.getClass()) {
                return false;
            }
            JoinFilterCacheKey that = (JoinFilterCacheKey) o;
            return leftBlocksSize == that.leftBlocksSize &&
                    Objects.equals(filter, that.filter);
        }