presto-parser/src/main/java/io/prestosql/sql/tree/SymbolReference.java/SymbolReference/equals
class SymbolReference:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        SymbolReference that = (SymbolReference) o;
        return Objects.equals(name, that.name);
    }