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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_table(self, dataframe, isStyled = False):
 """This method stores plain html string."""


        if isStyled :
            table_string = dataframe.render()
        else :
            table_string = dataframe.style.render()
            
        table_string = table_string.replace("\n", "").replace("<table", """<table class = "table table-sm table-hover" """).replace("<thead>", """<thead class="thead-inverse">""")
        self.table = table_string