analyzing the usefulness and testability of Madeleine Leininger’s Transcultural Nursing Theory and providing examples to support the analysis.

Explain the following points in a brief report based on the following theory: https://nurseslabs.com/madeleine-leininger-transcultural-nursing-theory/
Usefulness
How useful is this theory in practice?
Is the theory practical and helpful to nursing?
Does it contribute to understanding and predicting outcomes?
Cite an example/case study where this theory could be used.
Ruberic:
Thoroughly analyzes implications, conclusions, or consequences of the theory, perspective, or issue by providing exacting detail and depth
Testability
How testable is this theory?
Has this theory generated research?
Give one example of a study done using the theory.
Ruberic:
Comprehensive search strategy clearly described.