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+ <dia:attribute name="abstract">
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+ <dia:attribute name="text_color">
+ <dia:color val="#000000"/>
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+ <dia:attribute name="abstract_font">
+ <dia:font family="monospace" style="88" name="Courier"/>
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+ <dia:attribute name="polymorphic_font">
+ <dia:font family="monospace" style="8" name="Courier"/>
+ </dia:attribute>
+ <dia:attribute name="classname_font">
+ <dia:font family="sans" style="80" name="Helvetica"/>
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+ <dia:attribute name="abstract_classname_font">
+ <dia:font family="sans" style="88" name="Helvetica"/>
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+ <dia:attribute name="comment_font">
+ <dia:font family="sans" style="8" name="Helvetica"/>
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+ <dia:attribute name="attributes">
+ <dia:composite type="umlattribute">
+ <dia:attribute name="name">
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+ <dia:attribute name="type">
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+ <dia:attribute name="comment">
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+ </dia:attribute>
+ <dia:attribute name="operations">
+ <dia:composite type="umloperation">
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+ <dia:attribute name="stereotype">
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+ <dia:attribute name="type">
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+ <dia:attribute name="visibility">
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+ <dia:attribute name="comment">
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+ <dia:attribute name="inheritance_type">
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+ <dia:attribute name="parameters">
+ <dia:composite type="umlparameter">
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+ <dia:attribute name="type">
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+ <dia:attribute name="comment">
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+ </dia:attribute>
+ </dia:composite>
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+ <dia:attribute name="template">
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+ <dia:attribute name="templates"/>
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+ <dia:object type="UML - Association" version="0" id="O20">
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+ <dia:attribute name="obj_bb">
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+ <dia:attribute name="ends">
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+ <dia:attribute name="role">
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+ <dia:attribute name="arrow">
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+ <dia:attribute name="aggregate">
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+ <dia:attribute name="role">
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+ <dia:attribute name="arrow">
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+ <dia:attribute name="aggregate">
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+ <dia:attribute name="obj_bb">
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+ <dia:attribute name="line_colour">
+ <dia:color val="#000000"/>
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+ <dia:attribute name="text">
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+ <dia:attribute name="text_pos">
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+ <dia:attribute name="obj_bb">
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+ <dia:attribute name="line_colour">
+ <dia:color val="#000000"/>
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+ <dia:attribute name="text">
+ <dia:string>#obtener#</dia:string>
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+ <dia:attribute name="text_pos">
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