presto-spi/src/main/java/io/prestosql/spi/security/RoleGrant.java/RoleGrant/equals
class RoleGrant:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        RoleGrant roleGrant = (RoleGrant) o;
        return grantable == roleGrant.grantable &&
                Objects.equals(grantee, roleGrant.grantee) &&
                Objects.equals(roleName, roleGrant.roleName);
    }