src/Environaut/Checks/Check.php
public function setGroup($group = null)
    {
        if (null === $group || !is_string($group)) {
            $this->group = $this->getDefaultGroupName();
        } else {
            $this->group = $group;
        }

        return $this;
    }
public function setGroup($group = null)
    {
        if (null === $group || !is_string($group)) {
            $this->group = $this->getDefaultGroupName();
        } else {
            $this->group = $group;
        }

        return $this;
    }
Sets the group name of the check (for reports). Null or non-string values will set the default group name.

@param string $group name of the group the check belongs to

@return Check this instance for fluent API support