Scala Find Method Syntax -

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val underlying: mongodbcollection def find(doc: dbobject): dbcursor = underlying find doc

here's hypothetical program. apparently valid implementation of find method, don't understand how method body underlying find doc produce value. how find method evaluate doc parameter, , how underlying variable affecting anything? why not find doc underlying or find doc method body?

when method takes 1 parameter, can omit both prefix . , brace () when calling method on object.

underlying find doc

is same 

underlying.find(doc)

it calls find method on mongodbcollection instance underlying doc parameter.


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