driver-legacy/src/main/com/mongodb/DBCursor.java
public ReadPreference getReadPreference() {
        ReadPreference readPreference = findOptions.getReadPreference();
        if (readPreference != null) {
            return readPreference;
        }
        return collection.getReadPreference();
    }
public ReadPreference getReadPreference() {
        ReadPreference readPreference = findOptions.getReadPreference();
        if (readPreference != null) {
            return readPreference;
        }
        return collection.getReadPreference();
    }
Gets the default read preference.

@return the readPreference used by this cursor