src/SchemaAnalyzer.php
public function getChildrenRelationships($tableName)
    {
        return $this->fromCache($this->cachePrefix.'_children_'.$tableName, function () use ($tableName) {
            return $this->getChildrenRelationshipsWithoutCache($tableName);
        });
    }
public function getChildrenRelationships($tableName)
    {
        return $this->fromCache($this->cachePrefix.'_children_'.$tableName, function () use ($tableName) {
            return $this->getChildrenRelationshipsWithoutCache($tableName);
        });
    }
If this table is pointed by children tables (if other child tables have a primary key that is also a
foreign key to this table), this function will return the list of child tables.
This function will return an empty array if there are no children tables.

@param string $tableName

@return ForeignKeyConstraint[]