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7.6.3 Agreement on Parameter Specializers and Qualifiers
  
Two methods are said to agree with each other on parameter specializers and qualifiers if the following conditions hold: 
- 1.  Both methods have the same number of required parameters. Suppose the parameter specializers of the two methods are P1,1...P1,n and P2,1...P2,n. 
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- 2.  For each 1<=i<=n, P1,i agrees with P2,i. The parameter specializer P1,i agrees with P2,i if P1,i and P2,i are the same class or if P1,i=(eql object1), P2,i=(eql object2), and (eql object1 object2). Otherwise P1,i and P2,i do not agree. 
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- 3.  The two lists of qualifiers are the same under equal. 
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