class Material
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Material() method pseudocode
	set this material is available
end of Material


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Material (String) method pseudocode
	Initialize the title of the material and set it as available
end of Material


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getTitle method pseudocode
	return title
end of getTitle 


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isAvailable method pseudocode
	return true if this materila is available, otherwise, return false
end of isAvailable 


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setAvailablability method pseudocode
	set material as available or not according to the input state.
end of setAvailablability