def getFluvialLinks(self):
        """
        Retrieve only the links that represent fluvial portions of the stream. Returns a list of StreamLink instances.

        Returns:
            list: A list of fluvial :class:`.StreamLink` objects.
        """
        # Define fluvial types
        fluvialTypeKeywords = ('TRAPEZOID', 'TRAP', 'BREAKPOINT', 'ERODE', 'SUBSURFACE')

        fluvialLinks = []

        for link in self.streamLinks:
            for fluvialTypeKeyword in fluvialTypeKeywords:
                if fluvialTypeKeyword in link.type:
                    fluvialLinks.append(link)
                    break

        return fluvialLinks
Retrieve only the links that represent fluvial portions of the stream. Returns a list of StreamLink instances.

        Returns:
            list: A list of fluvial :class:`.StreamLink` objects.