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  <xs:element name="PublishingPrintingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_PublishingPrintingMember"/>
  <xs:element name="RailroadsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_RailroadsMember"/>
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  <xs:element name="SeniorSecuredLoanInvestmentsNonLiquidMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_SeniorSecuredLoanInvestmentsNonLiquidMember"/>
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  <xs:element name="ShortTermInvestmentMoneyMarketFundsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_ShortTermInvestmentMoneyMarketFundsMember"/>
  <xs:element name="SuperRetailMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_SuperRetailMember"/>
  <xs:element name="TechnologyMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_TechnologyMember"/>
  <xs:element name="TelecommunicationsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_TelecommunicationsMember"/>
  <xs:element name="TermLoanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_TermLoanMember"/>
  <xs:element name="TransportationExcludingAirRailMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_TransportationExcludingAirRailMember"/>
  <xs:element name="TransportationInfrastructureMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_TransportationInfrastructureMember"/>
  <xs:element name="UtilitiesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_UtilitiesMember"/>
  <xs:element name="VLNCInfrastructureIncMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="muzi_VLNCInfrastructureIncMember"/>
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</xs:schema>
