def __str__(self):
result = "<STR_LIT>"<EOL>result = result + "<STR_LIT>".ljust(<NUM_LIT>) + self.material.name + "<STR_LIT:\n>"<EOL>result = result + "<STR_LIT>".ljust(<NUM_LIT>) +str(self.get_mass_fraction_solids()) + "<STR_LIT:\n>"<EOL>result = result + "<STR_LIT>".ljust(<NUM_LIT>) +str(self.get_volume_fraction_solids()) + "<STR_LIT:\n>"<EOL>result = result + "<STR_LIT>".ljust(<NUM_LIT>) +str(self.solid_density) + "<STR_LIT:\n>"<EOL>result = result + "<STR_LIT>".ljust(<NUM_LIT>) +str(self.get_density()) + "<STR_LIT:\n>"<EOL>result = result + "<STR_LIT>".ljust(<NUM_LIT>) + str(self.get_mass()) + "<STR_LIT:\n>"<EOL>result = result + "<STR_LIT>".ljust(<NUM_LIT>) + str(self.H2O_mass) + "<STR_LIT:\n>"<EOL>result = result + "<STR_LIT>".ljust(<NUM_LIT>) + str(self.get_volume()) + "<STR_LIT:\n>"<EOL>result = result + "<STR_LIT>"<EOL>for size_class in self.material.size_classes:<EOL><INDENT>index = self.material.get_size_class_index(size_class)<EOL>result = result + str(size_class).ljust(<NUM_LIT>) + str(<EOL>self.size_class_masses[index]) + "<STR_LIT:\n>"<EOL><DEDENT>return result<EOL>
Create a string representation of the object.