fun <TExpression> graphLookup(from: String, startWith: TExpression, connectFromField: String, connectToField: String, fieldAs: String, options: GraphLookupOptions = GraphLookupOptions()): Bson (source)
Creates a graphLookup pipeline stage for the specified filter
from - the collection to query
startWith - the expression to start the graph lookup with
connectFromField - the from field
fieldAs - name of field in output document
options - optional values for the graphLookup
Parameters
Return
the $graphLookup pipeline stage
Mongodb
.driver.manual reference/operator/aggregation/graphLookup/ $graphLookup